Pavement marking skid resistance detection device

Abstract

The utility model discloses a pavement marking anti-skid performance detection device, which is characterized in that a shaft rod is movably connected inside a bracket, a pendulum bob is fixedly connected to the front end of the shaft rod, a pointer is fixedly connected to the pendulum bob, a handle is fixedly connected to the top of the bracket, and a ratchet wheel positioned on the back surface of the bracket is fixedly connected to the rear end of the shaft rod; a connecting block is fixedly connected to the right side of the shaft rod, a positioning block is movably connected to the back face of the connecting block through a pin shaft, the end, away from the connecting block, of the positioning block extends into the ratchet wheel and makes contact with the surface of the ratchet wheel, and a guiding structure used for pulling the positioning block to swing is arranged in the handle. The ratchet wheel and the positioning block are arranged on the back surface of the shaft rod, so that the pendulum bob only has a one-way swinging effect, numerical value recording errors caused by too fast falling of the pendulum bob are avoided, and the problems that an existing pendulum type instrument does not have an effect of positioning a pendulum needle after swinging, an operator cannot conveniently and accurately record numerical values, and the working efficiency is low are solved. And the anti-skid performance detection accuracy is seriously influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of pavement marking detection, in particular to a device for detecting the anti-skid performance of pavement markings. Background Technique

[0002] The anti-skid performance of pavement markings is an important technical index to ensure driving safety and road use efficiency. According to relevant standards and technical specifications, anti-skid materials should be used for pavement markings, and their anti-skid value is usually not less than 45 BPN. This value reflects the anti-skid ability of the marking surface under friction conditions and is one of the key indicators for evaluating the anti-skid performance of markings.

[0003] The anti-skid performance is crucial for ensuring the driving safety of vehicles in various weather and road conditions. Especially in rainy, snowy weather or on slippery roads, good anti-skid performance can significantly reduce the risk of vehicle skidding, thus avoiding traffic accidents. Under different climate conditions, the anti-skid performance of pavement markings is affected by various factors, among which temperature and water film thickness are two main factors. According to research, dynamic friction coefficient tests carried out on heavy-load roads in mining areas show that as the ground temperature rises, the average value of the dynamic friction coefficient gradually decreases, indicating that the anti-skid performance is continuously weakened. Specifically, the higher the ground temperature, the smaller the average value of the dynamic friction coefficient of the two types of roads, indicating a decrease in anti-skid performance. In addition, the water film thickness also has a significant impact on the friction coefficient. As the water film thickness increases, the dynamic friction coefficient gradually decreases, which means that in rainy or humid environments, the anti-skid performance of the road surface will further decline.

[0004] According to the provisions of "Road Prefabricated Marking Tape" (GB / T 24717), a pendulum friction coefficient tester is used to measure the anti-skid ability of the surface. During the test, the pendulum should be grasped all the time when the pendulum swings back. The slider should be raised with the handle to prevent contact between the slider and the test surface. Before each swing, the pointer should return until it leans against the adjustment knob. Therefore, the existing pendulum instrument does not have the effect of positioning the pendulum needle after swinging, which is not convenient for the operator to accurately record the value, seriously affecting the accuracy of anti-skid performance detection. Content of the Utility Model

[0005] To solve the problems raised in the above background technique, the purpose of the present utility model is to provide a device for detecting the anti-skid performance of pavement markings, which has the advantage of positioning the detection pendulum needle, and solves the problem that the existing pendulum instrument does not have the effect of positioning the pendulum needle after swinging, which is not convenient for the operator to accurately record the value and seriously affects the accuracy of anti-skid performance detection.

[0006] To achieve the above object, the present utility model provides the following technical solution: A device for detecting the anti-slip performance of road markings, comprising a bracket. An axle rod is movably connected inside the bracket. A pendulum is fixedly connected to the front end of the axle rod. The pendulum is fixedly connected with a pointer. A handle is fixedly connected to the top of the bracket. A ratchet is fixedly connected to the rear end of the axle rod and is located on the back of the bracket. A connecting block is fixedly connected to the right side of the axle rod. The back of the connecting block is movably connected with a positioning block through a pin shaft. One end of the positioning block away from the connecting block extends into the inside of the ratchet and contacts the surface of the ratchet. A guiding structure for pulling the positioning block to swing is arranged inside the handle.

[0007] Preferably, as the present utility model, the guiding structure for pulling the positioning block to swing is a guide rod fixedly connected inside the handle. An adjusting plate is slidably connected to the surface of the guide rod. An elastic traction rope is fixedly connected to the bottom of the adjusting plate. One end of the traction rope away from the adjusting plate extends to the back of the positioning block and is fixedly connected with the positioning block.

[0008] Preferably, as the present utility model, buffers sleeved on the surface of the guide rod are arranged on both the left side and the right side inside the handle. The buffers are located at the bottom of the adjusting plate.

[0009] Preferably, as the present utility model, a limiting plate is fixedly connected inside the handle and is located inside the buffer. One side of the limiting plate away from the handle is sleeved on the surface of the traction rope and is slidably connected with the traction rope. Rubber rings sleeved on the surface of the traction rope are fixedly connected to both the top and the bottom of the limiting plate.

[0010] Preferably, as the present utility model, a sleeve is movably connected to the back of the bracket through a pin shaft. A support rod is slidably connected inside the sleeve. A compression spring is fixedly connected to the top of the support rod and is located inside the sleeve. One side of the compression spring away from the support rod is fixedly connected with the inner surface of the sleeve.

[0011] Preferably, as the present utility model, the bottom end of the support rod extends to the bottom of the sleeve and is movably connected with a base through a pin shaft. A torsion spring sleeved on the surface of the pin shaft is arranged on the back of the base.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] 1. By arranging a ratchet and a positioning block on the back of the axle rod, the present utility model can enable the pendulum to only have a one-way swinging effect, avoiding errors in numerical recording caused by the pendulum falling too fast. It solves the problem that the existing pendulum tester does not have the effect of positioning the pendulum needle after swinging, which is not convenient for the operator to accurately record the numerical value and seriously affects the accuracy of the anti-slip performance detection.

[0014] 2. The utility model can facilitate the user to open and close the positioning block by setting an elastic traction rope and an adjusting plate, and can avoid the influence of the positioning block on the one-way limit of the ratchet wheel.

[0015] 3. By setting a buffer, the utility model can support the adjusting plate, so that there is a fixed space between the adjusting plate and the handle, which is convenient for the user to grasp the adjusting plate.

[0016] 4. By setting a limiting plate and a rubber ring, the utility model can limit the traction rope and avoid the influence of the traction rope on the rotation of the ratchet wheel.

[0017] 5. By setting a sleeve, a support rod and a compression spring, the utility model can improve the stability of the bracket and avoid the phenomenon of tipping when the bracket is placed on an inclined road surface.

[0018] 6. By setting a torsion spring and a base, the utility model can further increase the contact area between the support rod and the ground and improve the friction between the support rod and the ground. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of the utility model;

[0020] Figure 2 is a schematic rear view structural diagram of the utility model;

[0021] Figure 3 is a schematic rear view sectional structural diagram of a part of the utility model;

[0022] Figure 4 is a schematic right view structural diagram of a part of the utility model;

[0023] Figure 5 is a schematic three-dimensional structural diagram of a part of the utility model;

[0024] Figure 6 is the utility model Figure 2 in which the enlarged structural diagram at A is shown.

[0025] In the figure: 1, bracket; 2, shaft rod; 3, pendulum; 4, pointer; 5, handle; 6, ratchet wheel; 7, connecting block; 8, positioning block; 9, guide rod; 10, adjusting plate; 11, traction rope; 12, buffer; 13, limiting plate; 14, rubber ring; 15, sleeve; 16, support rod; 17, compression spring; 18, base; 19, torsion spring. DETAILED DESCRIPTION OF THE INVENTION

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0027] As shown in Figures 1 to 6 the figure, a device for detecting the anti-skid performance of road markings provided by the present utility model includes a bracket 1; a shaft rod 2 movably connected inside the bracket 1; a pendulum 3 fixedly connected to the front end of the shaft rod 2; a pointer 4 fixedly connected to the pendulum 3; a handle 5 fixedly connected to the top of the bracket 1;

[0028] A ratchet wheel 6 is fixedly connected to the rear end of the shaft rod 2 and is located on the back of the bracket 1. A connecting block 7 is fixedly connected to the right side of the shaft rod 2. A positioning block 8 is movably connected to the back of the connecting block 7 through a pin shaft. One end of the positioning block 8 away from the connecting block 7 extends into the inside of the ratchet wheel 6 and contacts the surface of the ratchet wheel 6. A guiding structure for pulling the positioning block 8 to swing is arranged inside the handle 5.

[0029] Referring to Figure 5 , the guiding structure for pulling the positioning block 8 to swing is a guide rod 9 fixedly connected inside the handle 5. An adjusting plate 10 is slidably connected to the surface of the guide rod 9. A traction rope 11 is fixedly connected to the bottom of the adjusting plate 10. One end of the traction rope 11 away from the adjusting plate 10 extends to the back of the positioning block 8 and is fixedly connected to the positioning block 8. The traction rope 11 has elasticity.

[0030] As a technical optimization scheme of the present utility model, by providing the elastic traction rope 11 and the adjusting plate 10, it is convenient for the user to open and close the positioning block 8, and the influence of the positioning block 8 on the one-way limit of the ratchet wheel 6 can be avoided.

[0031] Referring to Figure 5 , buffers 12 sleeved on the surface of the guide rod 9 are arranged on both the left side and the right side inside the handle 5. The buffers 12 are located at the bottom of the adjusting plate 10.

[0032] As a technical optimization scheme of the present utility model, by providing the buffers 12, the adjusting plate 10 can be supported, so that there is a fixed space between the adjusting plate 10 and the handle 5, which is convenient for the user to grasp the adjusting plate 10.

[0033] Referring to Figure 6 , a limiting plate 13 is fixedly connected inside the handle 5 and is located inside the buffer 12. One side of the limiting plate 13 away from the handle 5 is sleeved on the surface of the traction rope 11 and is slidably connected to the traction rope 11. Rubber rings 14 sleeved on the surface of the traction rope 11 are fixedly connected to both the top and the bottom of the limiting plate 13.

[0034] As a technical optimization solution of the present utility model, by providing the limit plate 13 and the rubber ring 14, the traction rope 11 can be limited, avoiding the influence of the traction rope 11 on the rotation of the ratchet wheel 6.

[0035] Reference Figure 2 , the back of the bracket 1 is movably connected with a sleeve 15 through a pin shaft. A support rod 16 is slidably connected inside the sleeve 15. The top of the support rod 16 is fixedly connected with a compression spring 17 located inside the sleeve 15. One side of the compression spring 17 away from the support rod 16 is fixedly connected with the inner surface of the sleeve 15.

[0036] As a technical optimization solution of the present utility model, by providing the sleeve 15, the support rod 16 and the compression spring 17, the stability of the bracket 1 can be improved, avoiding the phenomenon of the bracket 1 tipping over when placed on an inclined road surface.

[0037] Reference Figure 3 , the bottom end of the support rod 16 extends to the bottom of the sleeve 15 and is movably connected with a base 18 through a pin shaft. A torsion spring 19 sleeved on the surface of the pin shaft is provided on the back of the base 18.

[0038] As a technical optimization solution of the present utility model, by providing the torsion spring 19 and the base 18, the contact area between the support rod 16 and the ground can be further increased, and the friction between the support rod 16 and the ground can be improved.

[0039] An operation method of a road marking anti-slip performance detection device includes the following steps:

[0040] S1: Push the pendulum 3 to the right with one hand, so that the pendulum 3 moves to the maximum stroke;

[0041] S2: Pull the adjusting plate 10 with the other hand through the handle 5. The distance between the adjusting plate 10 and the inner wall of the handle 5 is reduced and the traction rope 11 is pulled up. The traction rope 11 pulls the positioning block 8 and makes it rotate around the pin shaft;

[0042] S3: When the positioning block 8 moves into the inclined groove on the surface of the ratchet wheel 6, release the pendulum 3. The pendulum 3 quickly swings using centrifugal force and rotates around the shaft rod 2. When the pendulum 3 freely swings down from a certain height, the pendulum 3 contacts the asphalt surface. Due to the friction between the two, part of the energy is lost, so that the pendulum 3 can only swing back to a certain height;

[0043] S4: The positioning block 8 located inside the ratchet wheel 6 positions the ratchet wheel 6, avoiding the phenomenon of the ratchet wheel 6 rotating back. The ratchet wheel 6 can synchronously position the pendulum 3 through the shaft rod 2, so as to achieve the effect of facilitating the operator to accurately record the value.

[0044] Preferably, for the method of gripping the handle 5, the palm part should be in contact with the top of the handle 5, the finger part is bent and moved to the bottom of the adjusting plate 10, and then the fingers perform a gripping action and pull up the adjusting plate 10.

[0045] The working principle and usage process of the present utility model: When in use, first judge the inclination of the road surface. When the inclination affects the placement stability of the bracket 1, rotate the sleeve 15 towards the side of the lower horizontal road surface. The sleeve 15 drives the support rod 16 to move synchronously. When the support rod 16 is disengaged from the bracket 1, the compression spring 17 releases the deformation force to push the support rod 16 to extend outward. The support rod 16 drives the base 18 to move outward and contact the ground. Then, push the pendulum 3 to the right. When the pendulum 3 moves to the maximum stroke, the user uses the other hand to pull the adjusting plate 10 through the handle 5. The distance between the adjusting plate 10 and the inner wall of the handle 5 is reduced and the traction rope 11 is pulled up. The traction rope 11 pulls the positioning block 8 and makes it rotate around the pin shaft. When the positioning block 8 moves into the inclined groove on the surface of the ratchet wheel 6, the user releases the pendulum 3. The pendulum 3 swings rapidly using the centrifugal force and rotates around the shaft rod 2. When the pendulum 3 swings freely from a certain height, the pendulum 3 contacts the asphalt surface. Due to the friction between the two, part of the energy is lost, so that the pendulum 3 can only swing back to a certain height. At the same time, the positioning block 8 inside the ratchet wheel 6 positions the ratchet wheel 6 to prevent the ratchet wheel 6 from rotating back. The ratchet wheel 6 can synchronously position the pendulum 3 through the shaft rod 2, so as to achieve the effect of facilitating the operator to accurately record the value.

[0046] In summary, for this road marking anti-slip performance detection device, by arranging the ratchet wheel 6 and the positioning block 8 on the back of the shaft rod 2, the pendulum 3 can only have a one-way swinging effect, avoiding errors in value recording caused by the pendulum 3 falling too fast, solving the problem that the existing pendulum tester does not have the effect of positioning the pendulum needle after swinging, is not convenient for the operator to accurately record the value, and seriously affects the accuracy of anti-slip performance detection.

[0047] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0048] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A device for detecting the anti-slip performance of road markings, comprising a bracket (1), wherein a shaft rod (2) is movably connected inside the bracket (1), a pendulum (3) is fixedly connected to the front end of the shaft rod (2), the pendulum (3) is fixedly connected with a pointer (4), and a handle (5) is fixedly connected to the top of the bracket (1), characterized in that: A ratchet wheel (6) located on the back surface of the bracket (1) is fixedly connected to the rear end of the shaft rod (2). A connecting block (7) is fixedly connected to the right side of the shaft rod (2). A positioning block (8) is movably connected to the back surface of the connecting block (7) through a pin shaft. One end of the positioning block (8) far away from the connecting block (7) extends into the interior of the ratchet wheel (6) and contacts the surface of the ratchet wheel (6). A guiding structure for pulling the positioning block (8) to swing is arranged inside the handle (5).

2. The anti-skid performance detection device for road markings according to claim 1, wherein: The guiding structure for pulling the positioning block (8) to swing is a guide rod (9) fixedly connected inside the handle (5). An adjusting plate (10) is slidably connected to the surface of the guide rod (9). An elastic traction rope (11) is fixedly connected to the bottom of the adjusting plate (10). One end of the traction rope (11) far away from the adjusting plate (10) extends to the back surface of the positioning block (8) and is fixedly connected to the positioning block (8).

3. The anti-skid performance detection device for road markings according to claim 2, wherein: Buffers (12) sleeved on the surface of the guide rod (9) are arranged on both the left side and the right side inside the handle (5). The buffers (12) are located at the bottom of the adjusting plate (10).

4. A road marking anti-skid performance detection device according to claim 3, characterized in that: A limiting plate (13) located inside the buffer (12) is fixedly connected to the inside of the handle (5). One side of the limiting plate (13) far away from the handle (5) is sleeved on the surface of the traction rope (11) and is slidably connected to the traction rope (11). Rubber rings (14) sleeved on the surface of the traction rope (11) are fixedly connected to both the top and the bottom of the limiting plate (13).

5. The anti-skid performance detection device for road markings according to claim 1, wherein: A sleeve (15) is movably connected to the back surface of the bracket (1) through a pin shaft. A support rod (16) is slidably connected to the inside of the sleeve (15). A compression spring (17) located inside the sleeve (15) is fixedly connected to the top of the support rod (16). One side of the compression spring (17) far away from the support rod (16) is fixedly connected to the inner surface of the sleeve (15).

6. The pavement marking skid resistance performance detection device according to claim 5, characterized in that: The bottom end of the support rod (16) extends to the bottom of the sleeve (15) and is movably connected to a base (18) through a pin shaft. A torsion spring (19) sleeved on the surface of the pin shaft is arranged on the back surface of the base (18).

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